Quote:
Originally Posted by Skywagon
eg3 is correct. I've installed the Supersprint street muffler. Not cheap, about $2500. for the muffler and exhaust pipes. Good news was no cutting was required for the tips. They claim 7HP gain. Bad news was it barely made any difference in the sound so I chopped off the resonator too. It is a straight through, small one but it's removal added just enough of a tone to the car. I have pictures of the install if anyone wants to see just send me your e-mail via PM.
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Yes am in the market for an exhaust this spring. Would be interested in your solution for my X6 35i. Thanks